US4039116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photodetector-to-substrate bonds
Assignee: Honeywell Inc
•
Filing: 1976-07-23
•
Granted: 1977-08-02
•
Expires: 1996-07-23
Abstract
Abstract A photodetector is bonded to an electrically conductive substrate with an indium containing solder. An electrical insulating layer of a stable oxide which is wettable by indium provides electrical insulation between the electrically conductive substrate and the photodetector.
Inventors
- 👤 John H. Chaffin, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:21
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/60; H10W; H10W72/00; H10W72/071; H10W72/073; H10W72/07331; H10W72/07337; H10W72/30; H10W72/351; H10W72/352; H10W72/353; H10W72/354; H10W72/50; H10W72/531; H10W72/536; H10W72/851; H10W72/874; H10W72/884
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
57 words
A method of bonding a photodetector to an electrically conductive substrate, the method comprising: sputter depositing an electrically insulating layer on a surface of the photodetector, the electrically insulating layer being a stable, electrically insulating oxide which is wettable by indium; and bonding the electrically insulating layer to the electrical conductive substrate with an indium containing solder.
Claim 2
Independent Claim
57 words
A method of bonding a photodetector to an electrically conductive substrate, the method comprising: sputter depositing an electrically insulating layer on a surface of the photodetector, the electrically insulating layer being a stable, electrically insulating oxide which is wettable by indium; and bonding the electrically insulating layer to the electrical conductive substrate with an indium containing solder.
Claim 3
Dependent Claim
16 words
The method of claim 1 wherein sputter depositing comprises reactive sputter depositing in an oxygen atmosphere.
Claim 4
Dependent Claim
14 words
The method of claim 2 wherein the photodetector is a mercury cadmium telluride photodetector.
Claim 5
Dependent Claim
14 words
The method of claim 3 wherein the electrically insulating layer is a chromium oxide.
Claim 6
Dependent Claim
13 words
The method of claim 3 wherein the electrically insulating layer is cadmium tellurite.
Claim 7
Dependent Claim
23 words
The method of claim 1 and further comprising: sputter cleaning the surface of the photodetector prior to sputter depositing the electrical insulating layer.
References Cited (Backward Citations)
US2779685A
Cited
US3533850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |